Burner



May 19, 1925.

J. H. ZIMMER BURNER Filed June i7. 192g Rig@ 3 mm". T

- NIWIIIIIIIII HHH` h j l ff 177g. O f/l U f .if Z l y\ f/f'! H'; .5: Y j'; l l( WJ 4 I5 @i 0 HTTORNEYS Patented May 19, 1925.

JOHN H. ZIMMER, F ST. LOUIS, MISSOURI.

BURNER.

v Application led June 17, 1922. Serial N'o. 568,955.

To all whom z't may concern.:l

Be it known that I, JOHN H. ZIMMER, a Acitizen ofthe United States of America, va

resident of the city of St. Louis, in the State struction, combination and arrangement of Fig.

of Missouri, useful Improvements in Burners, of which the followin is a full, clear, and exact description, re erence being had to the accompanying drawings, forming part of this specification.

This invention relates t-o improvements in gas burners, and has for its object the increase of the heat energy, or heat-producing power, of the gas flame of a burner.

p Brieiy stated, the invention consists in providing a gas burner with an open or unconfined air gap of measurable extent between the gas tip and a constantly burning lighter, the ignition taking place at the lighter and the b se of the flame remaining Iopposite said lig ter, leaviin the air gap free for the commingling o gas and atmospheric air drawn from the surrounding medlum by the current of the jet.

. With the foregoing and other objects in view, the invention comprises the novel conparts hereinafter more specifically described and illustrated in the accompanying drawings wherein is shown the referred embodiment'of the invention. owever, it is to be understood that the invention comprehends changes, variations and modifications which come within the scope of the claims hereunto appended.

Fig. I is a plan view of the gas burner. Fig. II is a section on line IIe-II of f Fig. III is a side elevation of the gas burner. u

Referring to the drawings, 1 designates a base or stand for the support of the burner and its accessories. The tip 2 is rovided at its lower end with screw threa s, which ermits said tip to be secured to salid base 1..

ommunicating with the passageway in the tip is throu h the base 1 and is in communication with t e (passageway through the stop-cock .4, screwe have invented certain new and l a gas passageway 3 which passes into said base 1. The Outer end 4 of the stop-cock 4 is provided with an extension 4v adapted to receive an end of a hose or other gas conductor which will be connected to the gas Supply.

Extending upwardly from the base lis a rlgid supporting member 5 which supports the lighter duct 6, said supporting member being provided with an opening 5 through which an oi'set portion 6 bf said lihter duct extends. One end portion 7 o the lighter duct 6 extends in a direction' toward the tip 2, the outer end of saidl portion 7 terminating a little to one side of the path of the jet from said tip, and the other end portion 8 of said lighter duct, which islocated on the opposite side of the supporting member 5 extends rearwardly from said supporting member. Passing downwardly through theupper portion of the supporting 'member 5 is a set screw 9 adapted to bear against the portion 6 of the lighter duct whereby the outer end of the lighter duct may be located in diiierent positions relative to the tip 2.

Extended through the wall of the portion 4 of the stop-cock 4 isa nipple 10, said nipple being in free communication with thatportion of the gas passageway in said stop-cock beyond the valve mechanism, thereby permitting. a flow of gas from the passageway through the nipple 10 at all times. Connecting the nipple 10 with the end lportion 8 of the lighter duct 6 is a flexible tube 11 whereby said portion 8 may be raised and lowered for a purpose to be nipple 10.

To provide a means for supporting the articles -bein subjected to the flame, I rovide a mem er 14 which is supportein any suitable manner by the base 1.

The o eration of my device is as follows:

The lighter 6 being ignited and the stopcock opened, a stream of gas will be forced up through the air gap gathering atmosp erle air freely from all surrounding points 13 thereof enters the innerfend of the on the way, and reaching the lighter will be ignited and burn with an intense heat, about 572? above that of the ordinary Bunsen burner. The explanation of the high temperature is found in the fact that it is possible to obtain a perfect mixture of gas and air. In an ordinary Bunsen burner the gas passes upwardly 'fin a tube and the air is drawn into said tube at the lower portion thereof, but owing to the restricted space within which said gas and air pass, they are not properly mixed, the center of the upwardly moving fluid body being practically pure gas while the outer sheath is practically pure air. In the operation of the device here- 1n disclosed, the gas issues from the tip in a fan-shape, and it is possible for the gas and air to be thoroughly mixed before same reaches the lighter. The action of the apparatus depends upon the distance of the end of the lighter from the tip. No definite rule can be given fordetermining this distance, it being a matter of adjustment within certain limits. If the lighter is too far away lit will fail to ignite the gas, which lmay have absorbed too much air; if it is too near there will be little increase over the ordinary Bunsen iame, and in fact, there is danger of ignition at the tip 2, when the heat will be that of a common gas burner. To get the best effects, therefore, and to enable the intensity of the flame to be controlled, the lighter end may be adjusted toward and away from the tip 2 by unscrewing the set screw 9 and rocking the portion 6 of the lighter duct within the opening 5 .in the member 5, so as to move the end of said lighter duct toward or away fromthe tip 2, as suggested by dotted lines in Fig. il. After the tip of the lighter duct has been properly located, the set screw 9 may be again screwed downwardly until it bears againstthe portion 6 of the lighter duct 6, when said lighter duct will be fixed in place.

Under ordinary circumstances gas nis always iiowing through the lighter duct and said lighter duct is of such restricted diameter throughout, or at its eXtreme end, that it will supply but a very small -flame,

just sufficient for igniting purposes.

if the' force of the iow of gas issuing from the tip 2 is not strong there may be a tendency for the dame to travel downwardly and burn at saidl tip..` To 'prevent this i provide said tip with a plurality of slots l5 which extend downwardly freni the point at which the gas issues from tip. ln operation t e jet of gas passing through wil draw air through the 'iature Q, 'l which air will have the effect of g under the iiting saine said iiame settle downen that-ip 2.

entcri Shop l' tor for conducting a combustible under pressure to said tip, said tip being provided with an orifice of such size that a stream of combustible issues from said tip at a velocity greater than the velocity of ilame propagation, and a lighter above said tip and separated therefrom by an unconfined air gap, said lighter being located at a point along the stream of combustible where the velocity of the combustible is approximately equal to the velocity of ame propagation in the stream of combustible at which point the combustible is ignited to produce a ame.

2. A burner comprising a tip, a conductor for conducting a combustible under pressure to said tip, said tip being provided with an orifice of such size that a stream of combustible issues from said tip at a velocity greater than the velocity of ame propagation, and a lighter above said tip and separated therefrom by an unconiined air gap, said lighter being located at one side of the path of the stream of combustible at a point along the stream of combustible where the velocity of 'the combustible is approximately equal to the velocity of flame propagation in the stream of combustible at which point thecombustible is ignited to produce a dame.

3. A burner comprising a tip, a conductor for conducting a combustible under pressure to said tip, said tip being provided with an orifice of such size that a stream of combustible issues from said tip at a velocity greater than the velocity of flame propagation, a lighter above said tip and separated therefrom by an unconfined air gap, said lighter being located at a point along the stream of combustible where the velocity of the combustible is approximately equal to the velocity of fiarne propagation in the stream of combustible at which point the combustible is ignited to produce a flame. and means whereby said lighter may be adjusted toward and away from said tip.

4. A burner comprising a tip, a conductor for conducting a combustible under pressure to said tip, said tip being provided with an oriiice of such size that a stream of combustible issues from said tip at a velocity greater than the velocity ofA fiame propagation` a iighter above said tip and separated therefrom by an unconiined air gap, said iighter being located at a point etang the stream of combustible where the velocity of the combustible is approximately equal. tothe velocity of propagation in the stream of combustii'ile which5 point the combustible is ignited to produce a iiame, and means whereby said l i may be adjusted tow said tip, said means .e ing member by which. sale and away

otally supported, and means whereby the fined air gap through which a column of 10 discharge end of said lighter lmay be fixed unburned gas passes from said tip, said gas at different distances from said tlp. being ignited when it reaches said constant- 5. In a burner, the combination of a tip 1y burning lighter and burning only at that provided with means for preventing the point.

burning of the gas at the point where said In testimony that I claim the foregoing 1f vas issues from said tip, and a constantly I hereunto aix my signature. burning lighter above said tip, said tip and said lighter being separated by an uncon- JOHN H. ZIMMER. 

